Energy-saving silent motor shaft and preparation method thereof

Abstract

The application discloses an energy-saving mute motor shaft and a preparation method thereof, which comprises a first shaft body, a mute structure and various polishing components. The mute structure is arranged, that is, a first shell and a second shell are arranged outside the first shaft body, so that the first connecting ring and the second connecting ring are rolled against the first shaft body, the rolling effect of the ball bearings can be used when the first shaft body rotates, the friction is reduced, and the noise problem is reduced. Meanwhile, the first damper can be used to realize vibration energy dissipation and noise reduction activities. Meanwhile, a polishing device is arranged in the finishing treatment step to efficiently polish the outside of the motor shaft. That is, the clamping structure can improve the abutting effect of the abrasive belt and the outside of the motor shaft, and prevent the polishing from loosening. Meanwhile, the intermittent adjustment and use of the multi-position spraying cooling and abrasive belt polishing position can be met by the sequential operation of the spraying assembly and the winding assembly in the cooling structure. In this way, the efficiency and intelligence of the motor shaft preparation and polishing are achieved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of motor shafts, in particular to an energy-saving and mute motor shaft and a preparation method. BACKGROUND

[0002] A motor shaft is a cylindrical object worn in the middle of a bearing or the middle of a wheel or the middle of a gear, but a small part of it is square, the shaft is a mechanical part supporting rotating parts and rotating with them to transmit motion, torque or bending moment, generally a metal round rod, each section can have different diameters, the parts rotating in the machine are installed on the shaft.

[0003] The existing application No. CN212210714U relates to an energy-saving and mute motor shaft, which comprises a shaft body, a first shaft head arranged at the right end of the shaft body, a first threaded section arranged at the right end of the first shaft head, a second shaft head arranged at the left end of the shaft body, a second threaded section arranged at the left end of the second shaft head, and the shaft body, the first shaft head, the second shaft head, the first threaded section and the second threaded section are integrally pressure cast, a taper knurling part is arranged on the shaft body, and a bearing part is arranged on the right side of the taper knurling part, the patent, by arranging the bearing part, the flat section and the taper knurling part, the strength and stability of the shaft are improved, the matching effect of the shaft is improved, and the problems that the bearing position of most current super-mute drying machine shafts is prone to change during motor operation, resulting in accelerated wear, and the matching of the shaft and parts is poor are solved.

[0004] The above-mentioned patent solves the problem of poor matching of the shaft and parts by improving the external structure of the motor shaft, but at present, when the motor rotates, the motor shaft rotates in the machine shell, and there is a certain friction force between the motor shaft and the machine shell, so when the motor shaft and the machine shell produce friction force when the motor drives the motor shaft to rotate, noise is generated, affecting the usability.

[0005] Secondly, during the preparation process of the motor shaft, the motor shaft generally needs to be polished to remove burrs and flash on the surface of the shaft, improve the surface smoothness and flatness, and the current polishing method generally uses a manual polishing tool to polish the motor shaft, and the polishing efficiency and polishing quality of this method are difficult to guarantee. SUMMARY

[0006] The application aims to provide an energy-saving and mute motor shaft and a preparation method to solve the problems in the background art.

[0007] In order to achieve the above object, the present application adopts the following technical scheme: an energy-saving and mute motor shaft and a preparation method, comprising a first shaft body, a second shaft body, a knurling part, a threaded section, a key groove, a mute structure, the left side of the first shaft body is integrally connected with the second shaft body, the left side outer surface of the second shaft body is provided with the knurling part, the right side outer surface of the first shaft body is provided with the threaded section, the upper end of the first shaft body is provided with the key groove, and the right side outer surface of the first shaft body is provided with the mute structure.

[0008] Preferably, the mute structure comprises a first shell, a second shell, a first connecting ring, a second connecting ring, a ball, a first damper and a butt joint groove, the first shell is sleeved on the outside of the first shaft body, the second shell is bolted on the bottom of the first shell, the first connecting ring and the second connecting ring are arranged in the first shell and the second shell respectively, the balls are equidistantly arranged in the first connecting ring and the second connecting ring, the balls are in abutment with the outside of the first shaft body away from the first connecting ring and the second connecting ring, the first damper is arranged on the outer end of the first connecting ring and the second connecting ring, and the butt joint groove is arranged on the both ends of the first shaft body.

[0009] The present application provides a preparation method of an energy-saving and mute motor shaft, comprising the following steps:

[0010] S1, material selection and pretreatment: high-strength alloy steel or composite material is used, the internal structure of the material is improved by forging process, or precise mold is used for one-piece die casting forming, to form the basic outline of the shaft body, shaft head and threaded section;

[0011] S2, rough machining treatment: the shaft body is roughly turned using a numerical control lathe, the diameter and length are preliminarily formed, the taper knurling part is machined, and the key groove, thread and other detail structures are machined on the shaft body or end part;

[0012] S3, heat strengthening treatment: carburizing or nitriding treatment is performed on the key stress parts (such as bearing part and knurling part);

[0013] S4, finishing treatment: high-precision polishing treatment is performed on the material using polishing equipment;

[0014] S5, quality inspection and packaging: the key size tolerance of the shaft is verified using a three-coordinate measuring instrument, the running noise is detected in a simulated load environment, and the packaging treatment is completed after inspection.

[0015] Preferably, the polishing device used in the step S4 comprises a polishing apparatus, which comprises a rack, a guide rail, a moving pin, a clamp, a controller, a moving seat and a variety of polishing components, the upper end of the rack is provided with the guide rail, the right side of the guide rail is slidably provided with the moving pin, and the left side of the guide rail is provided with the clamp, the front side of the clamp is provided with the controller, the middle part of the guide rail is provided with the moving seat, and the upper end of the moving seat is provided with the variety of polishing components.

[0016] Preferably, the variety of polishing components comprises a support, a clamping structure, a connecting plate, a polishing structure and a cooling structure, the support is arranged on the upper end of the moving seat, the clamping structure is arranged in the lower end of the support, the connecting plate is fixedly connected to the upper end of the support, one side of the connecting plate is provided with the polishing structure, and the other side of the connecting plate is provided with the cooling structure.

[0017] Preferably, the clamping structure comprises a pneumatic cylinder, a connecting strip, a connecting frame, a sliding block, a first connecting arm, a second connecting arm, a moving strip, a second damper and a roller, the upper end of the pneumatic cylinder is connected to the connecting strip, the connecting strip is arranged in the lower end of the connecting frame, the two sides of the connecting frame are connected to the support, the sliding block is slidably arranged in the inner sides of the two sides of the connecting strip, the first connecting arm and the second connecting arm are rotatably arranged on the outer sides of the sliding block, the moving strip is slidably inserted into the upper ends of the two sides of the connecting frame, the second damper is arranged on the upper end of the moving strip, and the roller is rotatably arranged on the outer side of the second damper.

[0018] Preferably, the polishing structure comprises a first winding drum, a limiting strip, a sand belt, a second winding drum and a limiting rod, the first winding drum is rotatably arranged on one side of the connecting plate, the first winding drum is threadedly connected to the limiting strip, the sand belt is arranged on the outer side of the first winding drum, the other side of the sand belt is connected to the second winding drum, and the limiting rod is fixedly arranged on the two sides of one side of the connecting plate and connected to the sand belt.

[0019] Preferably, the cooling structure comprises a support plate, a motor, a first bevel gear, a second bevel gear, a third bevel gear, a fourth bevel gear, a spraying assembly and a winding assembly, the support plate is fixedly connected to one side of the connecting plate, the motor is arranged on the upper end of the support plate, the upper end of the motor is connected to the first bevel gear, the upper end of the first bevel gear is engaged with the second bevel gear, the second bevel gear is connected to the third bevel gear through a rotating shaft, the lower end of the third bevel gear is engaged with the fourth bevel gear, the lower end of the fourth bevel gear is connected to the spraying assembly, the winding assembly is arranged between the second bevel gear and the third bevel gear, and the winding assembly is connected to the second winding drum.

[0020] Preferably, the spraying assembly comprises a fixed plate, a limiting ring, a guide ring, a rotating drum, a moving drum, a pin shaft, a water pipe, a connecting cover and a three-way spray head, the fixed plate is fixedly arranged at the lower end of the connecting plate, the upper end of the fixed plate is slidingly inserted into the limiting ring, the lower end of the fixed plate is fixedly connected with the guide ring, the limiting ring and the guide ring are connected with the outer side of the rotating drum, the upper end of the rotating drum is connected with the fourth bevel gear, the outer side of the rotating drum is sleeved with the moving drum, the upper end of the moving drum is inserted with the pin shaft, the inner side of the pin shaft is inserted into the rotating drum, the rotating drum is inserted with the water pipe, the lower end of the water pipe is connected with the connecting cover, the connecting cover is threadedly connected with the bottom of the moving drum, the bottom of the connecting cover is provided with the three-way spray head, and the three-way spray head is connected with the lower end of the water pipe.

[0021] Preferably, the winding assembly comprises a driving wheel, a belt, a driven wheel, a rotating disc, a pawl, a spring sheet, a ratchet wheel and a protective shell, the driving wheel is connected between the second bevel gear and the third bevel gear, the outer side of the driving wheel is drivingly connected with the belt, the side, away from the driving wheel, of the belt is connected with the driven wheel, the middle part of the driven wheel is connected with the rotating disc, the rotating disc is arranged in the protective shell, the inner side of the rotating disc is rotatably provided with the pawl, the side of the pawl is connected with the spring sheet, the outer end of the pawl is connected with the ratchet wheel, the ratchet wheel is arranged on the outer side of the rotating disc, the protective shell is fixedly connected with the outer side of the connecting plate, and the middle part of the side of the ratchet wheel is connected with the second winding drum.

[0022] Compared with the prior art, the present application has the following advantages:

[0023] The present application sets a mute structure, i.e. a first shell and a second shell are arranged outside the first shaft body, so that the first connecting ring and the second connecting ring roll against the first shaft body, the first shaft body can reduce friction and noise by rolling effect of the ball when rotating, and vibration energy dissipation and noise reduction can be realized by cooperating with the first damper, and a polishing device is arranged in the finishing process to efficiently polish the outer part of the motor shaft, i.e. the clamping structure can improve the abutting effect of the abrasive belt and the outer part of the motor shaft, and prevent the polishing from loosening, and the spraying assembly and the winding assembly can be sequentially operated in the cooling structure to meet the intermittent adjustment of the spraying cooling and the abrasive belt polishing position, so that the motor shaft preparation and polishing are efficient and intelligent.

[0024] The clamping structure is driven by the air cylinder to move upward, the two side sliding blocks connected with the transverse grooves in the connecting strip move horizontally, the first connecting arm and the second connecting arm are drivingly connected to realize the relative movement of the two side moving strips, the second damper connected to the upper end of the moving strip pushes the roller to press the abrasive belt against the outer part of the motor shaft, so that the polishing quality of the motor shaft is ensured and the loosening of the abrasive belt is avoided.

[0025] The setting of the polishing structure, i.e. the abrasive belt between the first reel and the second reel, can wrap the motor shaft when the motor shaft is polished, so as to achieve auxiliary efficient polishing and polishing of the outer part of the motor shaft.

[0026] The setting of the cooling structure and the spraying assembly, i.e. the meshing transmission of the first bevel gear to the second bevel gear, can realize the rotation of the third bevel gear, so that the fourth bevel gear can realize the rotation of the bottom connecting rotating drum through meshing transmission. When the rotating drum rotates, the moving cylinder outside the rotating drum can realize stable up-and-down movement through the sliding connection of the limiting ring and the fixed plate and the support and limiting guidance of the guide ring. Thus, the cooling water transmitted by the water pipe is sprayed out from the three-way nozzle installed at the bottom of the connecting cover, so as to realize spraying cooling when the motor shaft and the abrasive belt are polished, prevent the debris of the polishing object from adhering to the abrasive belt, and thus enhance the friction and grinding force, improve the polishing effect and prolong the service life of the abrasive belt. Meanwhile, the spraying of the three-way nozzle up and down can pre-spray and cool the two sides of the abrasive belt, accelerate the wetting effect, and make the subsequent polishing position adjustment in a high-efficiency polishing state.

[0027] The setting of the cooling structure and the winding assembly, i.e. the meshing transmission of the first bevel gear to the second bevel gear, can realize the rotation of the third bevel gear. The driving wheel connected between the second bevel gear and the third bevel gear rotates and drives the other side connecting driven wheel through the external connection of the belt. When the driven wheel rotates, the rotating disc arranged inside the protective shell rotates. When the rotating disc rotates, the pawl arranged on the left side of the rotating disc cooperates with the spring sheet connected on one side to abut against the internal tooth angle of the ratchet, i.e. to drive the rotation of the ratchet. When the ratchet rotates, the second reel connected to the middle part of the ratchet on one side winds the abrasive belt, so that the polishing position of the abrasive belt can be conveniently adjusted, the polishing position is not worn, the subsequent polishing quality is not affected, the polishing position can be efficiently and flexibly adjusted without manual stop adjustment. When the driving wheel, the belt and the driven wheel are driven to rotate the rotating disc, the pawl does not abut against the internal tooth angle of the ratchet, so that the ratchet is in a static state. Thus, the second reel does not wind the abrasive belt, so that the intermittent adjustment of the polishing position of the abrasive belt and the up-and-down reciprocating spraying and cooling process are not interfered. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a preparation process schematic diagram of the motor shaft.

[0029] Figure 2 It is a preparation process schematic diagram of the motor shaft.

[0030] Figure 3 It is a split structure schematic diagram of the motor shaft and the mute structure.

[0031] Figure 4 The right view of the internal structure of the mute structure of the present application is shown in the figure.

[0032] Figure 5 The structure diagram of the polishing device of the present application is shown in the figure.

[0033] Figure 6 The structure diagram of the multi-purpose polishing assembly of the present application is shown in the figure.

[0034] Figure 7 The structure diagram of the clamping structure of the present application is shown in the figure.

[0035] Figure 8 The structure diagram of the polishing structure of the present application is shown in the figure.

[0036] Figure 9 The structure diagram of the cooling structure of the present application is shown in the figure.

[0037] Figure 10 The structure diagram of the spraying assembly of the present application is shown in the figure.

[0038] Figure 11 The structure diagram of the winding assembly of the present application is shown in the figure.

[0039] Figure 12 The internal structure diagram of the winding assembly of the present application is shown in the figure.

[0040] In the figure: the first shaft body-1, the second shaft body-2, the knurling part-3, the threaded section-4, the keyway-5, the mute structure-6, the first shell-61, the second shell-62, the first connecting ring-63, the second connecting ring-64, the ball-65, the first damper-66, the butt joint groove-67, the polishing device-7, the rack-71, the guide rail-72, the moving pin-73, the clamp-74, the controller-75, the moving seat-76, the multi-polishing assembly-77, the support-771, the clamping structure-772, the air cylinder-7721, the connecting strip-7722, the connecting frame-7723, the sliding block-7724, the first connecting arm-7725, the second connecting arm-7726, the moving strip-7727, the second damper-7728, the roller-7729, the connecting plate-773, the polishing structure-774, the first winding drum-7741, the limiting strip-7742, the abrasive belt-7743, the second winding drum-7744, the limiting rod-7745, the cooling structure-775, the supporting plate-7751, the motor-7752, the first bevel gear-7753, the second bevel gear-7754, the third bevel gear-7755, the fourth bevel gear-7756, the spraying assembly-7757, the fixed plate-77571, the limiting ring-77572, the guide ring-77573, the rotating drum-77574, the moving drum-77575, the pin shaft-77576, the water pipe-77577, the connecting cover-77578, the three-way spray head-77579, the winding assembly-7758, the driving wheel-77581, the belt-77582, the driven wheel-77583, the turntable-77584, the pawl-77585, the spring sheet-77586, the ratchet wheel-77587, the protective shell-77588. DETAILED DESCRIPTION

[0041] In order to further explain the technical scheme of the present application, specific embodiments will be described in detail below.

[0042] Please refer to Figures 1-4 The present application provides a kind of energy-saving mute motor shaft, including first shaft body 1, second shaft body 2, knurling part 3, threaded section 4, keyway 5, mute structure 6, first shaft body 1 left side integral butt joint has second shaft body 2, second shaft body 2 left side outer surface is provided with knurling part 3, first shaft body 1 right side outer surface is provided with threaded section 4, first shaft body 1 upper end is provided with keyway 5, first shaft body 1 right side outer surface is provided with mute structure 6.

[0043] The mute structure 6 includes a first shell 61, a second shell 62, a first connecting ring 63, a second connecting ring 64, a ball 65, a first damper 66 and a docking groove 67, the first shell 61 is sleeved outside the first shaft body 1, and the left and right sides of the first shell 61 are connected with the second shell 62 oppositely arranged on the bottom through bolts, the first shell 61 and the second shell 62 are respectively provided with the first connecting ring 63 and the second connecting ring 64 in a semicircular ring shape, and the first connecting ring 63 and the second connecting ring 64 are respectively provided with the ball 65 at equal intervals inside, the side of the ball 65 away from the first connecting ring 63 and the second connecting ring 64 is abutted with the outside of the first shaft body 1, the abutment support of the ball 65 can reduce the friction force, realize auxiliary mute cooperation, the outer end of the first connecting ring 63 and the second connecting ring 64 is docked with the first damper 66 on three sides, and at the same time, the damping support of the first damper 66 can make the shaft body rotation transmission process stable, avoid the generation of vibration noise, and the docking groove 67 is opened on the two ends of the outside of the first shaft body 1, and the inside of the docking groove 67 on the two sides is respectively embedded with the opening end of the first shell 61 and the second shell 62, so that the firmness of the overall installation state of the mute structure 6 is ensured.

[0044] Specifically, when the docking groove 67 opened on the two ends of the outside of the first shaft body 1 is used to realize the stable docking and installation of the first shell 61 and the second shell 62, the first connecting ring 63 and the second connecting ring 64 respectively arranged inside the first shell 61 and the second shell 62 can realize the abutting effect of the balls 65 arranged inside and the outside of the first shaft body 1, so that when the first shaft body 1 is in a rotating state, the hard friction force between the shaft body and the shell can be converted into rolling friction force, thereby the friction resistance can be reduced, and the noise generated in the friction process can be reduced, and at the same time, the first damper 66 arranged on the outer end of the first shell 61 and the second shell 62 can realize the energy dissipation of the rotation vibration, so as to ensure the stability of the shaft body rotation and reduce the generation of vibration noise.

[0045] The application provides a preparation method of an energy-saving mute motor shaft.

[0046] S1, material selection and pretreatment: high-strength alloy steel or composite material is used, high-pressure plastic deformation of a forging machine is used to improve the internal grain structure of the metal, the strength and fatigue resistance of the material are improved, or a die casting machine is used to quickly form a composite material shaft, light weight design is realized, so as to realize one-step die casting of the shaft body, the shaft head and the threaded segment, and the production efficiency is improved;

[0047] S2, rough machining treatment: a numerical control lathe is used to roughly turn the shaft body, the diameter and the length are initially formed, the taper knurling part is machined, and the key groove, the thread and other detail structures are machined on the shaft body or the end part, so as to reduce human errors;

[0048] S3, heat strengthening treatment: carburizing or nitriding treatment is performed on key stress parts (such as bearing part and knurling part) to improve the wear resistance and service life of the subsequent shaft body;

[0049] S4, finishing treatment: high-precision polishing treatment is performed on the material by using a polishing device, so as to reduce the small burrs on the surface of the shaft body and reduce the air friction noise;

[0050] S5, quality inspection and packaging: the key size tolerance of the shaft is verified by using a three-coordinate measuring instrument, the running noise is detected in a simulated load environment, and the packaging treatment is completed after inspection.

[0051] Please refer to Figures 5-8 The polishing device used in step S4 in the embodiment includes a polishing device 7, the polishing device 7 includes a rack 71, a guide rail 72, a moving pin 73, a clamp 74, a controller 75, a moving seat 76 and a variety of polishing assemblies 77, the upper end of the rack 71 is provided with the guide rail 72, the right side of the guide rail 72 is slidably provided with the moving pin 73, the left side of the guide rail 72 is provided with the clamp 74, the front side of the clamp 74 is provided with the controller 75, the middle upper end of the guide rail 72 is provided with the moving seat 76, and the upper end of the moving seat 76 is provided with the variety of polishing assemblies 77.

[0052] The variety of polishing assemblies 77 includes a support 771, a clamping structure 772, a connecting plate 773, a polishing structure 774 and a cooling structure 775, the support 771 is fixedly connected to the upper end of the moving seat 76, the clamping structure 772 is arranged at the lower end in the support 771, the connecting plate 773 is fixedly connected to the upper end of the support 771, the polishing structure 774 is arranged on the front side of the connecting plate 773, and the cooling structure 775 is arranged on the rear side of the connecting plate 773.

[0053] The clamping structure 772 comprises a cylinder 7721, a connecting strip 7722, a connecting frame 7723, a sliding block 7724, a first connecting arm 7725, a second connecting arm 7726, a moving strip 7727, a second damper 7728 and a roller 7729. The upper end of the cylinder 7721 is transversely butted with the connecting strip 7722, and a transverse groove is integrally arranged in the middle of the connecting strip 7722. The connecting strip 7722 is installed at the lower end of the connecting frame 7723, and the left and right sides of the connecting frame 7723 are connected with the support 771, so as to realize stable support and cooperation. The left and right sides of the connecting strip 7722 are provided with sliding blocks 7724, and the two sliding blocks 7724 are slidably connected with the transverse groove in the connecting strip 7722. The outer sides of the two sliding blocks 7724 are rotatably provided with the first connecting arm 7725 and the second connecting arm 7726, respectively. The installation directions of the first connecting arm 7725 and the second connecting arm 7726 are opposite, and the length of the first connecting arm 7725 is shorter than that of the second connecting arm 7726. The outer sides of the first connecting arm 7725 and the second connecting arm 7726, away from the sliding block 7724, are rotatably connected with the connecting frame 7723 and the moving strip 7727, respectively. The moving strip 7727 is symmetrically and slidably connected with the left and right sides of the connecting frame 7723. The upper inner sides of the two moving strips 7727 are transversely provided with the second dampers 7728, and the outer sides of the second dampers 7728 are rotatably provided with the rollers 7729.

[0054] The polishing structure 774 comprises a first winding drum 7741, a limiting strip 7742, a sand belt 7743, a second winding drum 7744 and a limiting rod 7745. The first winding drum 7741 is rotatably installed at the left side of the front end of the connecting plate 773. The front end of the first winding drum 7741 is threadedly connected with the limiting strip 7742. The limiting strip 7742 can avoid the sliding of the sand belt 7743. The outer side of the first winding drum 7741 is provided with the sand belt 7743. The right side and the upper end of the sand belt 7743 are connected with the second winding drum 7744. The overall structure of the second winding drum 7744 is consistent with that of the first winding drum 7741. The limiting rods 7745 are fixedly connected with the left and right sides of the upper end of the front side of the connecting plate 773. The outer sides of the two limiting rods 7745 are connected with the sand belt 7743, so as to ensure the smoothness and stability of the polishing and subsequent position adjustment of the sand belt 7743.

[0055] Specifically, when the polishing activity of the motor shaft is to be carried out, the motor shaft can be opposite to the clamp 74 on the left side of the guide rail 72, at this time, the moving pin 73 on the right side of the guide rail 72 can be moved to abut against the other side of the motor shaft, so that the motor shaft is placed in a stable transverse processing state, when the placement activity of the motor shaft is completed, the cylinder 7721 can be driven to realize the upward movement of the upper end of the connecting strip 7722, when the connecting strip 7722 moves upward, the slider 7724 abutting the two ends of the horizontal groove in the connecting strip 7722 will realize the horizontal relative movement activity through the connecting effect of the first and second connecting arms 7725 and 7726 on the both sides of the outer end, and thus the moving strip 7727 abutting the upper end of the second connecting arm 7726 can move inward through the guiding effect of the left or right side of the connecting frame 7723 on the upper end, thereby the two moving strips 7727 can move relatively and drive the movement of the rollers 7729 abutting the second damper 7728 on the upper end, so that the two rollers 7729 realize the clamping of the sand belt 7743, and the sand belt 7743 is tightly attached to the outer part of the motor shaft to be polished, so that the sand belt 7743 can be tightly attached to the motor shaft when the motor shaft rotates with the clamp 74, and the polishing and polishing quality is guaranteed.

[0056] Please refer to Figures 9-12 The cooling structure 775 in the embodiment includes a support plate 7751, a motor 7752, a first bevel gear 7753, a second bevel gear 7754, a third bevel gear 7755, a fourth bevel gear 7756, a spraying assembly 7757 and a winding assembly 7758. The support plate 7751 is fixedly connected to the lower end of the rear side of the connecting plate 773, and the upper end of the support plate 7751 is provided with the motor 7752. The upper end of the motor 7752 is opposite to the first bevel gear 7753, and the upper end of the first bevel gear 7753 is engaged with the second bevel gear 7754. The second bevel gear 7754 is opposite to the middle part of the third bevel gear 7755 through a rotating shaft, and the lower end of the third bevel gear 7755 is engaged with the fourth bevel gear 7756. The lower end of the fourth bevel gear 7756 is opposite to the spraying assembly 7757. The winding assembly 7758 is installed between the second bevel gear 7754 and the third bevel gear 7755, and opposite to the second winding drum 7744.

[0057] The spraying assembly 7757 comprises a fixed plate 77571, a limiting ring 77572, a guide ring 77573, a rotating cylinder 77574, a moving cylinder 77575, a pin shaft 77576, a water pipe 77577, a connecting cover 77578 and a three-way spray head 77579. The fixed plate 77571 is vertically fixedly connected to the lower end of the connecting plate 773. The upper end of the fixed plate 77571 is slidably inserted into the limiting ring 77572. The lower end of the fixed plate 77571 is fixedly connected with the guide ring 77573. The limiting ring 77572 and the guide ring 77573 are connected with the outer side of the rotating cylinder 77574. The limiting ring 77572 and the rotating cylinder 77574 are fixedly connected. The guide ring 77573 is inserted into the rotating cylinder 77574. In this way, the stable support and the guide cooperation of the up-down movement of the rotating cylinder 77574 are achieved. The upper end of the rotating cylinder 77574 is connected with the fourth bevel gear 7756. The rotating cylinder 77574 is sleeved with the moving cylinder 77575. The rotating cylinder 77574 is provided with a circulating groove. The upper end of the moving cylinder 77575 is inserted with the pin shaft 77576. The pin shaft 77576 is inserted into the circulating groove of the rotating cylinder 77574. In this way, the circulating transmission structure is formed. The up-down reciprocating movement of the moving cylinder 77575 is achieved. The water pipe 77577 is vertically inserted into the rotating cylinder 77574. The top of the water pipe 77577 is connected with the corrugated pipe. In this way, the reciprocating movement of the moving cylinder 77575 is ensured. The lower end of the water pipe 77577 is connected with the connecting cover 77578. The connecting cover 77578 is screwed with the bottom of the moving cylinder 77575. The connecting cover 77578 is provided with the three-way spray head 77579. The three-way spray head 77579 is connected with the lower end of the water pipe 77577.

[0058] The winding assembly 7758 comprises a driving wheel 77581, a belt 77582, a driven wheel 77583, a rotating disc 77584, a pawl 77585, a spring sheet 77586, a ratchet wheel 77587 and a protective shell 77588. The driving wheel 77581 is connected between the second bevel gear 7754 and the third bevel gear 7755. The driving wheel 77581 is externally connected with the belt 77582. The belt 77582 is connected with the driven wheel 77583 away from the driving wheel 77581. The driven wheel 77583 is connected with the rotating disc 77584 in the middle. The rotating disc 77584 is arranged in the protective shell 77588. The pawl 77585 is arranged on the left side of the rotating disc 77584. The right side of the pawl 77585 is provided with the spring sheet 77586. The spring sheet 77586 can support the pawl 77585 to ensure the firmness of the abutting state. The outer end of the pawl 77585 is connected with the ratchet wheel 77587. The ratchet wheel 77587 is arranged on the outside of the rotating disc 77584. The protective shell 77588 is tightly connected with the connecting plate 773. The ratchet wheel 77587 is connected with the second winding drum 7744 in the middle. When the ratchet wheel 77587 rotates, the second winding drum 7744 can be rotated synchronously to meet the flexible adjustment of the use position of the abrasive belt 7743.

[0059] Specifically, when a part of the abrasive belt 7743 is used for a long time and the grinding effect is reduced, the motor 7752 arranged on the upper end of the support plate 7751 is driven to make the motor 7752 achieve the meshing transmission of the first bevel gear 7753 and the second bevel gear 7754. Thus, the third bevel gear 7755 connected to the front side of the second bevel gear 7754 will rotate synchronously. Thus, the driving wheel 77581 arranged between the second bevel gear 7754 and the third bevel gear 7755 will rotate, and cooperate with the externally connected belt 77582 to realize the same direction rotation of the driven wheel 77583 connected on the other side. With the rotation of the driven wheel 77583, the rotating disc 77584 connected to the middle side of the driven wheel 77583 and arranged in the protective shell 77588 will rotate synchronously, so that the rotating disc 77584 realizes the counterclockwise movement of the pawl 77585 arranged on the left side. When the pawl 77585 moves counterclockwise, it will cooperate with the spring sheet 77586 connected on the right side to abut the tooth angle of the ratchet wheel 77587, that is, realize the synchronous counterclockwise pushing of the ratchet wheel 77587. With the counterclockwise rotation of the ratchet wheel 77587, the second winding drum 7744 connected to the middle side of the ratchet wheel 77587 will rotate to realize the winding of the abrasive belt 7743 connected on the outside, so that the abrasive belt 7743 cooperates with the first winding drum 7741 connected on the other side to adjust the grinding position, ensure the grinding quality of the motor shaft, and avoid the need for manual replacement when the external grinding position effect of the abrasive belt 7743 is reduced, which affects the overall processing efficiency.

[0060] Secondly, in the process of grinding the motor shaft with the abrasive belt 7743, in order to reduce the grinding temperature of the abrasive belt 7743 and avoid the problem of grinding damage when the abrasive belt 7743 grinds for a short time, the water pipe 77577 can be connected to the external pipeline, so that the external cooling water enters the water pipe 77577, and is sprayed between the motor shaft and the abrasive belt 7743 through the three-way spray head 77579 connected to the bottom of the water pipe 77577, to assist in achieving the grinding cooling activity, and prevent the debris of the grinding material from adhering to the gap between the abrasive belt 7743, thereby enhancing the friction and grinding force, improving the grinding effect and prolonging the service life of the abrasive belt 7743. At the same time, when the spraying position needs to be adjusted, the motor 7752 can be driven again to achieve positive engagement transmission of the first bevel gear 7753 and the second bevel gear 7754, and then the synchronous engagement transmission of the third bevel gear 7755 and the fourth bevel gear 7756 is achieved. In this way, the rotating drum 77574 connected with the fourth bevel gear 7756 can rotate synchronously, and when the rotating drum 77574 rotates, the pin shaft 77576 connected with the rotating drum 77574 can realize the up and down movement of the sleeve moving cylinder 77575 outside the rotating drum 77574 through the rotating and guiding effect. At the same time, when the moving cylinder 77575 moves up and down, the limiting ring 77572 provided outside can move up and down along the fixed plate 77571, and the moving cylinder 77575 can move up and down stably through the guidance and limiting of the guide ring 77573 fixedly provided at the bottom of the fixed plate 77571. When the moving cylinder 77575 moves up and down, the connecting cover 77578 connected to the bottom will move, so that the three-way spray head 77579 connected to the bottom of the connecting cover 77578 can realize up and down spraying cooling, which can assist in improving the spraying cooling of the outside of the abrasive belt 7743, that is, the pre-spraying cooling of the abrasive belt 7743, and improving the subsequent grinding quality. At the same time, when the connecting cover 77578 moves up and down, the water pipe 77577 connected to the upper end of the connecting cover 77578 can ensure the stability of the up and down movement state through the extension and contraction cooperation of the corrugated pipe connected to the upper end, and reduce the interference problem. Secondly, the three-way spray head 77579 outside has a valve, which can realize flexible adjustment of the spraying direction according to the cooling and spraying situation, so as to realize auxiliary grinding and cooling cooperation according to different situations.

[0061] Wherein, when the second bevel gear 7754 and the third bevel gear 7755 are positively engaged, the positive transmission of the driving wheel 77581, the belt 77582 and the driven wheel 77583 is realized synchronously, so that the rotating disc 77584 will realize clockwise rotation, and because the pawl 77585 on the left side of the rotating disc 77584 does not abut against the inner tooth angle of the ratchet wheel 77587 when rotating clockwise, the clockwise rotating pawl 77585 cannot drive the ratchet wheel 77587, so that the sand belt 7743 wound outside the second winding drum 7744 can remain in a stationary state, thereby achieving the structure that does not interfere with each other, and flexible operation according to actual conditions.

[0062] The above only describes the preferred examples of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method of manufacturing an energy saving silent motor shaft, characterized in that, It comprises the following steps: S1, material selection and pretreatment: high-strength alloy steel or composite material is used, the internal structure of the material is improved by forging process, or precise mold is used for integrated die casting forming to form the basic profile of shaft body, shaft head and threaded segment; S2, rough machining treatment: using numerical control lathe to rough turn the shaft body to preliminarily form the diameter and length, and process the taper knurling part, at the same time, milling keyway, thread and other detail structure on the shaft body or end part; S3, heat strengthening treatment: carburizing or nitriding treatment is carried out on the key stress part; S4, finishing treatment: using polishing equipment for high-precision polishing treatment of the material; S5, quality inspection and packaging: using three-coordinate measuring instrument to verify the key size tolerance of the shaft, and detecting the running noise in the simulated load environment, and packaging after inspection; The polishing equipment used in the step S4 comprises a polishing device (7), the polishing device (7) comprises a rack (71), a guide rail (72), a moving seat (76) and a variety of polishing assemblies (77), the guide rail (72) is installed on the upper end of the rack (71), the moving seat (76) is arranged on the upper end of the guide rail (72), and the variety of polishing assemblies (77) is installed on the upper end of the moving seat (76); The variety of polishing assemblies (77) comprises a support (771), a clamping structure (772), a connecting plate (773), a polishing structure (774) and a cooling structure (775), the support (771) is arranged on the upper end of the moving seat (76), the clamping structure (772) is arranged in the lower end of the support (771), the connecting plate (773) is fixedly connected to the upper end of the support (771), the polishing structure (774) is arranged on one side of the connecting plate (773), and the cooling structure (775) is arranged on the other side of the connecting plate (773); The clamping structure (772) comprises a cylinder (7721), a connecting strip (7722), a connecting frame (7723), a sliding block (7724), a first connecting arm (7725), a second connecting arm (7726), a moving strip (7727), a second damper (7728) and a roller (7729), the cylinder (7721) is connected with the connecting strip (7722) on the upper end, the connecting strip (7722) is installed in the lower end of the connecting frame (7723), the connecting frame (7723) is connected with the support (771) on both sides, the sliding block (7724) is slidingly arranged in the inner part of both sides of the connecting strip (7722), the first connecting arm (7725) and the second connecting arm (7726) are rotatably installed on the outer part of the sliding block (7724) respectively, the first connecting arm (7725) and the second connecting arm (7726) are rotatably connected with the connecting frame (7723) and the moving strip (7727) respectively on the side away from the sliding block (7724), the moving strip (7727) is slidingly inserted into the upper end of the connecting frame (7723) on both sides, the second damper (7728) is arranged on the upper end of the moving strip (7727), and the roller (7729) is rotatably arranged on the outer part of the second damper (7728); The polishing structure (774) comprises a first winding drum (7741), a limiting strip (7742), a sand belt (7743), a second winding drum (7744) and a limiting rod (7745), the first winding drum (7741) is rotatably installed on one side of the connecting plate (773), the first winding drum (7741) is externally threadedly connected with the limiting strip (7742), the outer side of the first winding drum (7741) is provided with the sand belt (7743), the other side of the sand belt (7743) is connected with the second winding drum (7744), and the limiting rods (7745) are respectively fixed on the two sides of one side of the connecting plate (773), and the outer sides of the limiting rods (7745) are respectively connected with the sand belt (7743).

2. The method of claim 1, wherein the energy saving silent motor shaft is prepared by the steps of: The polishing device (7) further comprises a moving ejector pin (73), a clamp (74) and a controller (75), the moving ejector pin (73) is slidably installed on the right side of the guide rail (72), the clamp (74) is installed on the left side of the guide rail (72), and the controller (75) is installed on the front side of the clamp (74). ​ 3. The method for preparing an energy-saving and silent motor shaft according to claim 1, characterized in that: The cooling structure (775) comprises a supporting plate (7751), a motor (7752), a first bevel gear (7753), a second bevel gear (7754), a third bevel gear (7755), a fourth bevel gear (7756), a spraying assembly (7757) and a winding assembly (7758), the supporting plate (7751) is fixedly connected to one side of the connecting plate (773), the motor (7752) is arranged on the upper end of the supporting plate (7751), the upper end of the motor (7752) is connected with the first bevel gear (7753), the upper end of the first bevel gear (7753) is engaged with the second bevel gear (7754), the second bevel gear (7754) is connected with the third bevel gear (7755) through a rotating shaft, the lower end of the third bevel gear (7755) is engaged with the fourth bevel gear (7756), the lower end of the fourth bevel gear (7756) is connected with the spraying assembly (7757), the winding assembly (7758) is arranged between the second bevel gear (7754) and the third bevel gear (7755), and the winding assembly (7758) is connected with the second winding drum (7744).

4. The method of claim 3, wherein the energy saving silent motor shaft is prepared by the steps of: The spraying assembly (7757) comprises a fixed plate (77571), a limiting ring (77572), a guide ring (77573), a rotating cylinder (77574), a moving cylinder (77575), a pin shaft (77576), a water pipe (77577), a connecting cover (77578) and a three-way nozzle (77579). The fixed plate (77571) is fixedly arranged at the lower end of the connecting plate (773), and the upper end of the fixed plate (77571) is slidingly inserted into the limiting ring (77572). The lower end of the fixed plate (77571) is fixedly connected with the guide ring (77573). The interiors of the limiting ring (77572) and the guide ring (77573) are connected with the outer side of the rotating cylinder (77574). The upper end of the rotating cylinder (77574) is connected with the fourth bevel gear (7756), and the exterior of the rotating cylinder (77574) is sleeved with the moving cylinder (77575). The upper end of the moving cylinder (77575) is inserted with the pin shaft (77576), and the inner side of the pin shaft (77576) is inserted into the interior of the rotating cylinder (77574). The interior of the rotating cylinder (77574) is inserted with the water pipe (77577), and the lower end of the water pipe (77577) is connected with the connecting cover (77578). The connecting cover (77578) is threadedly connected with the bottom of the moving cylinder (77575), and the bottom of the connecting cover (77578) is provided with the three-way nozzle (77579). The three-way nozzle (77579) is connected with the lower end of the water pipe (77577). ​ 5. The method of claim 3, wherein the energy saving silent motor shaft is prepared by the steps of: The winding assembly (7758) comprises a driving wheel (77581), a belt (77582), a driven wheel (77583), a rotating disc (77584), a pawl (77585), a spring sheet (77586), a ratchet wheel (77587) and a protective shell (77588). The driving wheel (77581) is connected between the second bevel gear (7754) and the third bevel gear (7755), and the exterior of the driving wheel (77581) is drivingly connected with the belt (77582). The side, away from the driving wheel (77581), of the belt (77582) is connected with the driven wheel (77583). The middle part of the driven wheel (77583) is connected with the rotating disc (77584), and the rotating disc (77584) is arranged in the interior of the protective shell (77588). The interior of the rotating disc (77584) is rotatably provided with the pawl (77585) on one side, and the pawl (77585) is connected with the spring sheet (77586) on one side. The outer end of the pawl (77585) is connected with the ratchet wheel (77587), and the ratchet wheel (77587) is arranged on the exterior of the rotating disc (77584). The protective shell (77588) is fixedly connected with the exterior of the connecting plate (773). The middle part of one side of the ratchet wheel (77587) is connected with the second winding drum (7744). ​ 6. The motor shaft prepared by the method for preparing an energy-saving and mute motor shaft according to claim 1, characterized in that: Including first axle body (1), second axle body (2), knurling (3), threaded section (4), keyway (5), mute structure (6), the first axle body (1) left side integrated butt joint has second axle body (2), the second axle body (2) left side outer surface is set up knurling (3), the first axle body (1) right side outer surface is set up threaded section (4), the first axle body (1) upper end is set up keyway (5), the first axle body (1) right side outer surface is installed mute structure (6).

7. The motor shaft of claim 6, wherein: The mute structure (6) includes first housing (61), second housing (62), first connecting ring (63), second connecting ring (64), ball (65), first damper (66) and butt joint groove (67), the first housing (61) is sleeved on the outside of the first axle body (1), and the bottom of the first housing (61) is bolted with the second housing (62), the first housing (61) and the second housing (62) are provided with the first connecting ring (63) and the second connecting ring (64) respectively, and the first connecting ring (63) and the second connecting ring (64) are provided with the ball (65) at equal intervals inside, the ball (65) is away from the first connecting ring (63) and the second connecting ring (64) side and the outside of the first axle body (1) is abutted, the first connecting ring (63) and the second connecting ring (64) outer end three sides are butt joint with first damper (66), the butt joint groove (67) is set up in the both ends of the first axle body (1), and the inside of the butt joint groove (67) on both sides is respectively embedded with the opening end of the first housing (61) and the second housing (62).

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